I find my girls can take up to a week to settle down again after you've taken their babies away. I have a few sows who I isolate for this period because they do similar.
They will need to re-establish their pecking order, so some pushing is fine. If possible, put them both on the same ground at the same time, this way you won't have one that's already claimed territory.
Can you not feed them at opposite ends of their pen? There may be a little running around, but it means they should both get enough to eat.
If they're not attacking/damaging each other this morning then leave them to it, they'll probably sulk for a few days and then settle down.
HTH